Milling plant.



W, REMYIHAPQDT.

MILLING PLANT.

APPLIOATION FILED AUG.1o,191e

Patented Feb. 4, 1913.

2 SHEETS-BHIEBT l.

VV f Y' N ESSEE W. REINH'ARDT.

MILLING PLANT.

APPLICATION FILED AUG. 10, 1910. ggl o .Patented Feb. 4;, ISIS.

2 SHEETS-SHEET 2.

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WALTER REINHARDT, OF FRANKFORT-ON-THE-MAIN, GERMANY.

MILLING PLANT.

Specification of Letters Patent.

Patented Feb. 4,1913.

Application-med August 10, 1910. Serial No. 576,600.

Thev advantages obtained by Vthe present invention may be summed up as follows: The plant for air suction or the 'compression of air may be erected in any desired part of the building. From this point air suction and air ressure conduits pass through the whole uilding. To these conduits the feed devices are connected. The

forwarding of the separate products is acy complished by placing the feeddevices in conduits, t-hus avoiding the production of heat by friction and also permitting air to be introduced in such roportions as to prevent the vpossibility ofP formation of an explosive mixture, consequently providing a dependable reventive against the possibi ity of dust exp osion. The amount of motive power necessar is lessened throughout the whole of the p ant and the mechanical efficiency considerably raised. There is no need to carry the separate roducts to a height in order to give them t e necessary fall, and this, under certain conditions, is van inestimable in. The space occupied by the whole plant 1s considerably `less than was previously required for the devices hitherto in As the conduits are everywhere completely closed, valuable powdery products can be transported without loss or danger of loss at the points of ingress and egress.

The danger of local stoppages, which in the systems hitherto in use were frequently caused by the numerous transmissions and cog-wheels, is here reduced to a minimum. Should, however, a stoppage occur by any chance, it is at once remarked at the central station and it can then be remedied without delay, thus avoiding the numerous and serious interruptions in work which in the older systems were so frequent. In conclusion it is possible to keep the degree of humidity at a definite and constant point by heating and moistening the air in the transport devices to the requiredldegree. Those devices moreover which are adapted for driving by means of pneumatic power, can be placed in the air-conduits so as to make use of the air therein, thus enabling the separate machines otherwise necessary for sorting, cleaning or filtering to be either dispensed with or else replaced by cheaper apparat-us.

In order to more clearly understand the present invention, reference is to be had to the 'accompanying diagrammatic drawings in. which- Figure 1 illustrates a plant in which the air is lead in a circuit. The dotted lines denote the air pressure pipes, the line-anddot lines the air suction pipes. Figs. 2 and 3 are detailed views of special devices.

Referring to Fig. l of the drawings, a main pressure pipe line l and a suction pipe line 2 are shown connected with a common station adapted to provide the necessary pressure at one'port and the necessary suc* tion"at an opposite port. Any similar device may be provided for supplying pressure and suction to the pipe lines. The come pressed air which is taken from the atmosphere, either through interposed filters or without them, travels through pipe l in the direction of the arrow Vto the first receiving station 8, which is situated under a silo 3. This receiving station is designated at all times by the reference character 3 and while 4 As shown in this figure, the vertical pipe b l leads from the silo 3 to an air tight casing, containing a cellular wheel c, driven by an suitable means. /Vhen this wheel is rotat the individual cells pass under the pipe Z and are filled with the grain or other material to be conveyed. The air tight casing is connected with the pipe l by a pipe d through which the grain falls into the pipe 1'; the.latter being connected to the compressed air-pipe l.

The grain, falling inpipe l is conveyed by the compressed air to the delivery station 4, which is constructed as follows: The

delivery station t consists mainly of a wide. 

